Method of and apparatus for folding wrappers around tablets



F. GROVER Nov. 1, 1932.

METHOD OF AND APPARATUS FOR FOLDING WRAPPERS AROUND TABLETS Filed April27, 1931 s sheets -sheet 1 EEWHFMM N NOV. 1, 1932. GROVER 1,885,543

METHOD OF AND APPARATUS FOR FOLDING WRAPPERS AROUND TABLETS Filed April27, 1931 8 Sheets-Sheet 2 F. GROVER Nov. 1, 1932.

METHOD OF AND APPARATUS FOR FOLDING WRAPPERS AROUND TABLETS 8Sheets-Sheet 3 Filed April 27, 1931 F. GROVER Nov. 1, 1932.

METHOD OF AND APPARATUS FOR FOLDING WRAPPERS AROUND TABLETS 8SheetsSheet 4 Filed April 27. 1931 Nov. 1, 1932. F. GROVER 1,885,543

METHOD OF AND APPARATUS FOR FQLDING WRAPPERS AROUND TABLETS Filed April2'7. 1931 8 Sheets-Sheet 5 NOV. 1, 1932. GRQVER' 1,885,543

METHOD OF AND APPARATUS FOR FOLDING WRAPPERS AROUND TABLETS Filed April27, 1931 8 Sheets-Sheet 6 Nov. 1, 1932. F. GROVER 1,835,543

METHOD OF AND APPARATUS FOR FOLDING WRAPPERS AROUND TABLETS Filed April27, 1951 s Sheet s-Sheet 7 Nov. 1, 1932.

F. GROVER METHOD OF AND APPARATUS FOR FOLDING WRAPPERS AROUND TABLETSFiled April 27, 1931 8 Sheets-Sheet 8 Patented Nov. 1, 1932 UNITEDSTATES PATENT OFFICE FREDERICK GROVER, OF LEEDS, ENGLAND, ASSIGNOR TOTHE FORGROVE MACHINERY COMPANY LIMITED, OF LEEDS, ENGLAND METHOD OF ANDAIP'ARATUS FOR FOLDING WRAPPERS AROUND TABLETS Application filed April.27, 1931, Serial No. 533,327, and in Great Britain June 20, 1930.

This invention relates to the method of and apparatus for foldingwrappers around tablets. The object of the present invention is toprovide a method and apparatus which is particularly suitable forwrapping elongated tablets in single or double wrappers, one end of thewrapping material being closed about the tablet by locked folds, theother end being first formed into an open cylinder which 7 is thentwisted so as to seal the tablets securely within the tubular wrapper.

According to this invention, such wrappers are folded around tablets bya method which consists in first enclosing one end of the tablet in awrapper with projecting wrapper sides, folding said projecting wrappersides on to the tablet with one of said wrapper sides overlapping theother wrapper side, said folding of said wrapper sides also forming theopen cylinder at the unenclosed end of said tablet and twisting saidopen cylinder in such a. direction as to retain the wrapper sides intheir overlapping relationship.

In practice, the tablet is thrust in the direction of its length againsta wrapper or pair of wrappers (hereinafter termed wrapper) which wrapperis held in front of a stationary slotted plate or guide andsimultaneously with the advance of the tablet, side supports betweenwhich the tablet is located advance with the tablet. These side supportsmay be connected together by a connecting plate forming a support forthe tablet as it is thrust forward. The wrapper is therefore bent by theforward end of the tablet assisted by the side supports when these partsare thrust through. the slot or guide to form the first fold in thewrapper. After this first fold has been formed, the side supports stopin their advance whilst the slide which presses the tablet forwardcontinues to advance. Two tucking members then move down on to the upperparts of the projecting wrapper sides in such a way that these upperparts of the wrapper sides are bent down snugly against the tabletsuntil they contact with the lower portion of the projecting wrappersides which are supported by a stationary plate. This tucking of theupper projecting wrapper sides bends the upper part of the wrapperaround the sides and top of the tablet and by gathering in the cornersof these wrapper sides towards the tablet, forms loops on both sides ofthe forward end of the tablet. The continued advance of the tablet bymeans of the slide causes folding plates to fold the loops snuglyagainst the forward sides of the tablets; thus forming secondary foldsoverlying the projecting wrapper sides.

For the purpose of controlling the axial alignment of the tablet and forpreserving the relative position of the tablet and the wrapper duringthe folding operations so far described, a retractable plunger with aflexible end to accommodate slight variations 1n length of the tabletsis caused to contact with the forward end of the wrapper and tablet sothat they are nipped between the advancing slide and the retractableplunger. The retractable plunger movements are synchronized with theslide movements to preserve the nip and convey the tablet and wrapperalong the required path. The foldmg plates which produce the secondaryfolds are situated upon a slotted carrier which supports the wrapper. Inthis carrier the projecting wrapper sides rest on the carrier and thewrapper acts as a bridge to support the partially wrapped tablet above aslot in the carrier. The transfer grippers then move into contact withthe partially wrapped tablet and move this tablet through the slot inthe carrier and thereby cause the projecting wrapper sides to be foldedupwards against the sides ofthe tablet in trough-like form. The sides'ofthe tablet and its wrapper are then received between lateral receivinggrippers and the upper transfer gripper then rises. A folding blade thenadvances transversely of the tablet, turning down one-of the wrappersides on to the upper surface of the tablet, and while this foldingblade still holds this wrapper side securely on the tablet, anotherfolding blade advances from the opposite side and turns the remainingwrapper side over the first wrapper side, the first move folding bladebeing withdrawn towards the end of the movement of the secondmovedfolding blade so as to enable th second moved folding blade to press theupr wrapper side tightly down upon the first olded wrapper side.

This folding operation of the wrapper sides also forms the open cylinderat the unenclosed end of the tablet, and during the movement of thefolding blade a former advances coaxially with thetablet into the opencylmder so as to maintain this part in the required formation. The opencylinder is then gripped by end grippers and said grippers are given atwisting motion about the axis of the former in such a direction thattheoverlapping folds of the wrapper sides will be retained in theiroverlapping relationship. While the twisting is in progress, the axialdistance between the twisting grippers and the lateral receivinggrippers is reduced to allow for the shortening effect of twisting thewrapper, thus preventing the wrapper from bein torn in the neck of thetwist. The latera receiving grippers then separate, leaving the twistinggrip ers still holding the wrapped tablet when t ese end grippers areopened to release the wrapped tablet which drops into a hopper and opensthe end grippers ready for the next twisting operation.

This invention will now be described with reference to the accompanyingdrawings which show the mechanism employed for folding two wrap ers (aninner wrapper and an outer wrapper around a tablet in accordance withthis invention.

' In the drawings Fig. 1 is an elevation illustrating the means forfeeding the tablet.

Fig. 2 is aplan view of the chain conveyor for'the tablet shown in Fig.1.

Fig. 3 is an elevation illustrating the wrapper feeding mechanism andthe slide for moving the tablet during part of the wrapping operation.

Fig. 4 is an elevation illustrating the mechanism for effecting thefirst wrapper fold and side tucking operations.

Fig. 5 is an end view of a fragment of Fi ure 4.

ig. 6 is a plan view of a carrier plate illustrating the mechanism forforming secondary folds on the wrapper sides.

Fig. 7 illustrates a mechanism for folding wrapper sides upwards againstsides of tablet.

Fig. 8 illustrates a mechanism for bending wrapper sides over the top ofthe tablet.

Fig. 9 is a sectional elevation on the line IX'IX in Fig. 8 and showingthe end former and end grippers intheir relationship to the mechanismfor folding the wrapper sides upwardly and bending these sides over thetop of the tablet.

Fig. 10 illustrates the end former and end grippers and the mechanismfor actuating these, in the position which they occupy before thetwisting o eration.

Fig. 11 is a sim' ar view to Fig. 10, but illustrating the grippers in aposition which they occupy at the end of the twisting operation.

Figs. 12 to 20 illustrate the tablet in the various stages of wrapping.

Referring to Figs. 1 and 2, the tablets from the stationary table 1 areremoved manually by the attendant of the machine and are placed one ineach of the chain pockets formed tion above the li ting lun er, when thelift:

ing plunger 8 moves t e ta let upwardly out of the pocket into theposition shown in Fig. 1. When the tablet has been moved into theposition shown in Fi 1, this tablet comes into a position at the rontend of a slide 10, shown in Fig. 3, which is reciprocated by a link 11and arm 11" under the movement of a cam, not shown. The slide 10 ismoved forward and carries the tablet from the lifting plunger 8 into acarrier member consisting of two side portions 12, forming side supportsfor the tablet, connected by a carrier plate 13.

The wrappers are fed by the mechanism shown in Fig. 3. A reel 14 feeds acontinuous band 15 of inner wrapper material to a cutting device,indicated at 16, where the material is cut into pieces of the requiredlength, which pieces pass downwardly in front of the carrier 12. One ofthese pieces forming an inner wrapper is shown in position in Fig. 3 andmarked 17. The outer wrappers are fed from a pack in the box 18 by thecontinuously revolving rubber roller 19 and pairs of feed rollers 20.The box 18 is raised and lowered so as periodically to feed the outerwrappers therefrom. An outer wrapper is shown in position for thewrapping operation in Fig. 3 and marked 21.

The wrappers are supported at the front of the carrier by means of -aretractable plunger 22, which is so moyed in synchronism with the slide10,-that the sl de 10 and retractable plunger 22 nip the tablet 5 andthe wrappers 17 and 21 between them and thus hold them in the requiredrelative positions. The tablet and wrappers soheld together are thenmoved by the slide 10 and retractable plunger 7 22 into the positionshown in Fig. 4. The carrier, consisting of lli the side members 12, andthe carrier plate 13,

are moved with the slide and tablet by means,

of the extensions 12', 12", and link 13' and the lever 13"..

-In Fig. 4 the wrappers, which are con veniently shown by .a single linemarked 17 and thus enclose the forward end of thetabletin the wrappers.In this first fold the sides of the wrappers are maintained in an openextendin position, as shown in Fig. 5, by the side portions 12 of thecarrier. An arm 27 pivoted at 83 and having an extension 84 beyond thepivot, which carries a bowl 85 forming a follower for the cam 86 bywhich this arm is operated in order to move tucking members 26 mountedon the arm down into contact with the upper portions of the laterallyextending wrapper sides to tuck these sides down into the position shownin dotted lines in Fig. and thus form looped portions at opposite sidesof the front end of the wrapper. The tucking members 26 remain on thetucked projecting wrapper sides and the forward movement of the tabletbetween the, slide and the retractable plunger 22 is continued. In thiscontinued movement the partially wrapped tablet is carried in betweenfolding plates 28, 29, mounted on a carrier plate 30 and these foldingplates 28, 29 engage with the looped side portions on either side of thefront end of the tablet and fold these down on to' the tucked sides ofthe wrapper previously formed by the tucking members 26, thus formingsecondary folds in the wrapper sides.

The partially wrapped tablet is finally moved by the-s1 de 10 in betweenthe levers 31 and 32 which are caused to grip the tablet by the springs33. When the tablet is gripped between the levers 31 and 32, theprojecting wrapper sides extend between the underside of a. plate 34 andthe upper side of the carrier disc 30. The carrier disc is provided witha slot 35 and the wrapper sides projecting on to the carrier disc serveas a bridge to support the tablet above the slot.' When the tablet is inthis position the slide is retracted and the retractable plunger ismoved clear of the tablet and wrappers and then the carrier plate isrotatated to move the partially wrapped tablet from the position markedX %in Fig. 6 to the position marked Yin this gure.

When the partially wrapped tablet arrives at the position Y in Fig. 6upper and lower transfer grippers 36 and 37 are moved by means of theirarms 38 and 39, respectively, under the act on of suitable cam, notshown, until said grippers-contact with the upper and lower surfaces ofthe partially wrapped tablet. These grippers are then caused to move thetablet downwardly in which downward movement the rojecting tuckedwrapper sides are caused y the edges of the slot- 35 in the carrierplate to be moved upwardly against the sides of the tablet into theposition shown in Fig. 7. Guides 40 are provided for maintaining theextending wrapper sides in their upturned position, while they are movedinto the position shown in Fig. 7. When the tablet and the wrapperreaches the position shown in Fig. 7, the tablet is gripped by sidegrippers 41 and 42, which are drawn on to the tablet and its wrapper bythe spring 43. The upper transfer gripper 36 is then moved upwardly offthe tablet and a folding blade 44 is moved by a lever 45, on which it ismounted, underthe control of a cam across the tablet from the positionshown in Fig. 7 into a position in which it extends across the top ofthe tablet and folding the contiguous upwardly ex tending wrapper sideon to the top of the tablet. While the folding blade 44 is in thisposition, a corresponding blade 46 on the opposite side of the table iscaused by the lever 47 on which it is mounted, to be moved across thetop of the tablet, thus folding the remaining upwardly projectingwrapper side onto the top of the first folded wrapper side. Towards theend of the movement of the folding blade 46'the folding blade 44 ismoved away from the tablet into the position shown in Fig. 8, afterwhich continued movement of the folding blade 46 acts to bring thefolding blade 46 firmly on to the overlapping wrapper sides to pressthese closely together. During this folding movement the wrapper at theunenclosed end of the tablet is formed into an open cylinder, andaformer 48 of cylindrical form is caused to enter the open cylinder ofthe wrapper in a manner to be hereinafter described to ensure thecorrect form of this during the folding operation.

The wrapper is now in the form shown in Fig. 18, and is still held bythe side grippers 41 and 42. These side grippers 41 and 42 are mountedas shown clearly in' Figs. 8 and 9,

on pivots 75 carried by an upstanding end us portion 76 of a doublebossedslide 77 slidably mounted on spaced guide rods'78. The slide 77 ismoved by a spring (not shown) under the control of a bowl 79 and camface 80 on the cam 81 to the left of the position shown in Fig. 9 so asto cause the side grippers 41 and 42 carrying the tablet and its wrapperto approach the former 48. The former 48 is also approached to the sidegrippers so as wrapper by being mounted 011 a push rod 49 which isconnected by a link 50 to a lever 51 operated by cam mechanism. Endgrippers 52 are provided mounted on one end of levers 53, each of whichlevers is pivoted at 54,

lot

-to engage in the open cylinder end of thei and is connected at its end55 by a pin 56 and incline slot 57 to a plate 58.

formed with a guide 62 for a fork 63 on-a lever 64 by which said sleevecan .-=l$e moved relatively to the push rod 49 under the control'of cammechanism. v p

In the position shown in Fig. 10, the end gripping fingers are in theiroutermost position. From this position the sleeve is moved to the rightand simultaneously the former 48' and its push rod 49 are retracted tothe left. When the inner end of the former 48 engages with the end ofthe sleeve 59, the levers will be caused by movement of the pins 56 inthe incline slots 55, to move the end gripping fingers inwardly on tothe open cylinder end of the wrapper. This position of the end grippersis shown in Fig. 11. The

end grippers and the sleeve 60, on which they are mounted, are thenrotated by gear wheels and 66, so as to cause the grippers to twist theopen cylinder end of the wrapper, .as shown in Fig. 11. During thetwisting movement of the end grippers, the side grippers 41 and 42continue to slide under the action of a spring (notshown) and the bowl79 and cam face 80 towards the end grippers s6 as to prevent the tearingof thewrapper during the twisting operation, and after the twistingoperation, and while the wrapper end is still gripped by the endgrippers, the side grippers 41 and 42 are opened by the engagement withan arm 68 fixed on one of said grippers 42 of the lever 67 (Figs. 7 and8) actuated by the cam 81. The side gripper 41 is moved simultaneouslyand oppositely to the gripper 42 owing to the interengaging teeth 82.These side grippers are then moved back into the position shown in Fig.9 by the cam face 80 and bowl 79 ready for the next tablet. The endgrippers 52 carrying the wrapped tablet, are now moved back from theposition shown in Fig. 11, to the position shown in Fig. 10,'in whichmovement the end grippers are moved outwardly so as to release thewrapped tablet which falls into a hopper or receptacle, not shown.

Various stages in the foldingof the wrappers around the tablet areillustrated diagrammatically in Figs. 12 to 20.

Fig. 12 illustrates the lifting of the tablet 5 from the dotted positionin which it is in the chain to the raised position, shown in full lines,where it is ready to be moved in the direction of its length for thewrapper folding operation.

Fig. 13 illustrates diagrammatically in elevation' and plan views theinitial movement of the tablet into contact with the wrapper.

Fig. 14 illustrates diagrammatically in elevation and plan views thefirst fold formed by forcing the wrapper marked 17 and 21 through theupper and lower guide members 23, 24. The side members 12 and the tabletcause the wrapper to be foldedinto a substantially U-shape around theforward end of the tablet and leaving upper and lower wrapper side parts70, 71, in addition to an extending wrapper end part 72.

Fig. 15 shows diagrammatically in plan View and rear elevation the nextstage in which the tablet andwrapper in its initial folded condition aremoved away from the side members 12, so as to leave the extendingwrapper sides and 71 unsupported.

Fig. 16 illustrates diagrammatically in rear elevation and plan view thetucking down of the upper wrapper sides 70 and the formation at theforward end of the wrapper of loops 7 3.

' Fig. 17 illustrates diagrammatically in plan view the supplementaryfolds made by folding down the loops 7 3.

- Fig. 18 illustrates diagrammatically in rearelevation the folding upof the wrapper sides by the edges of the slot 35 in the carrier plate30.

Fig. 19 illustrates diagrammatically in rear elevation and sideelevation the wrapper sides folded one over the top of the other, whichfolding'over is effected by blades 44 and 46 of the machine.

Fig. 20 shows aside view and a plan view of the wrapper in .its finalform.

What I claim as my invention and desire to secure by Letters Patentis 1. Apparatus for folding wrappers around tablets comprising foldingmeans for enclosing one end -of the tablet in a wrapper and formingoppositely projecting wrapper sides and a projecting wrapper end, sidetucking projections adapted to tuck the upper portions of the oppositelyprojecting wrapper sides down on to their lower portions to form sidetucks and upstanding loops in said projecting wrapper sides, foldingplates adapted to fold said upstanding loops against the sides of thetablet and wrapper sides to form secondary folds overlapping the tucks,side folding devices adapted tofold the projecting wrapper sides andsecondary folds around the sides and top of the tablet with the onewrapper side overlapping the other wrapper side, said folding of saidwrapper sides to form a single overlapping joint in the wrapper alsoforming the projecting wrapper end into an open cylinder, and grippersfor gripping said open cylinder and twisting said open cylinder in sucha direction as to retain the wrapper sides'in their overlappingrelationship.

2. Apparatus for folding wrappers around tablets comprising foldingmeans for enclosing one end of the tablet in a wrapper and formingoppositely projecting wrapper sides and a pro ecting wrapper end, sidetucking projections adapted to tuck the upper portions of the oppositelyprojecting wrapper sides down on to their lower or: tions to form sidetucks and upstan in loops in said projecting wrapper sides, fol ingplates adapted to fold said upstanding loops against the sides of thetablet and wrapper sides 'to form secondary folds oVer-' lapping thetucks, a carrier plate beneath said folding plates havin a slot of ajust sufiicient width to allow t e tablet and several thicknesses of thewrapper. to pass twisting said open cylinder in such a direction as toretain the wrapper sides in their overlapping relationsh i V 3.Apparatus for folding wrappers around 'tablets comprising folding meansfor enclosing one end of the tablet in a wrapper and forming oppositelyprojecting wrapper sides and a projecting wrapper end, side tuckingprojections adapted to tuck the upper portions of the oppositelyprojecting wrapper sides down on to their lower portions to form sidetucks and upstanding loops in said projecting wrapper sides, foldingplates adapted to fold said upstanding loops against the side of thetablet and wrapper sides to form secondary folds overlapping the tucks,acarrier plate beneath said folding plates having a slot of justsufficient width to allow the tablet and several thicknesses of thewrapper to pass through, transfer grippers adapted to grip the tabletand wrapper and to move these through said slot in the carrier plate andturn the wrapper sides upwardly against the sides of the tablet, sidegrippers for receiving the tablet and wrapper from the transfer grippersand holding the wrapper sides in their upwardly extending positions,side folding devices adapted to fold the upwardly extending wrappersides on to the top of the tablet with the one wrapper side overlappinthe other wrapper side, said folding of said wrapper sides also formingthe projecting wrapper end into an open cylinder, a former adapted tomove against the projecting wrapper end to ensure the formation of anopen cylinder during the folding of the wrapper sides, end gri pers forgripping said open cylinder an twisting said open cylinder in such adimotion as to retain the wrap or sides in their overlappin relationshipan means for moving' the si e grippers towards the end grippers duringthe twisting of the open'cyliner. v

4. Apparatus for folding wrappers around tablets comprising two spacedides, a

,plunger'adapted to thrust the tab et in the direction of its lengthagainst a wrapper and to force the tablet and wrapper between saidguides for first enclosing one end of the tablet in thewrapperbutleaving open oppositely projecting wrapper sides and a proectng wrapper end, tucking members adapt- ,ed to form tucks in saidprojecting wrapper sides, means for foldingsaid tucked pro ectmg wrappersldes upwardly against the sides of the tablet, folding blades adaptedto fold the tucked wrapper sides on to the to of the tablet with the onetucked wrapper si e overlapping the other tucked wrapper side, saidfoldi-ng of said tucked wrapper sides also folding the projectingwrapper end into an open cylinder at the unenclosed end of the tablet,and grippers for gripping said open cylinder and twisting said opencylinder in such a direction as to retain the tucked wrapper sides intheir overlapping relationship.

5. Apparatus for folding wrappers around tablets comprising two spacedguides, I a plunger adapted to thrust the tablet in the direction ofitslength against a wrapper andto force. the tablet and wrapper betweensaid guides for first enclosing oneend of the tablet in the wrapper butleaving open oppositely'projecting wrapper sides and a projectingwrapper end, side tuckers adapted to form tucks and upstanding loops insaid proecting wrapper sides, folding plates adapted to fold saidupstanding loops a ainst the sides of the tablet and wrapper si es, acarrier plate beneath said'folding plates having a slot of just'suflicient, width to allow the tablet and several thicknessesof thewrapper to pass through transfer grippers adapted to grip the tablet andwrapper and to move these through said slot and turnthe wrapper sidesupwardly against the sides of the tablet, side grippers for receivingthe tablet and Wrapper from the transfer grippers and holding thewrapper sides in their upwardly extending positions, folding bladesadapted to fold the wrapper sides onto the top of the tablet with theone wrapper side overlapping the other wrapper side said folding of saidwrapper sides also folding the projecting wrapper end into an opencylinder at the unenclosed end of the tablet, a former adapted to moveagainst the projecting wrapper end to ensure formation of the opencylinder duringthe folding of the wrapper sides, end grippers forgripping said open cylinder and twisting said open cylinder in such adirection as to retain the tucked wrapper sides in their overlappingrelationship and means 6 wrappers around tablets consisting in firstenclosing one end of the tablet in a wra per with opposltely projectingwrapper si es and a projecting wrapper end, tucking both ends of one othe projecting wrapper sides inwardly against the sides of the tabletand against the opposed projecting wrapper sides to form side tucks andupstanding loops, folding the upstanding loops against the side tucks toform secondary folds overlapping said tucks, folding said'oppositely proecting wrapper sides and the secondary folds together around the sidesof the tabletwith one of said wrapper sides and secondary foldsoverlapping the other of said wrapper 20 sides and. secondary folds toform a single overlapping joint in the wrapper said folding of saidwrapper sides and secondary folds also forming the projecting end intoan open cylinder and twisting said open cylinder in such a direction asto retain the wrapper sides in their overlapping relationship.

7. Apparatus for folding wrappers around tablets comprising, foldinmeans for enclosing one end of the tab et in a wrapper and formingoppositely projecting wrapper sides and a proj ec ing wrapper end, sidetucking devices adapted to tuck both ends of one of the projectingwrapper sides inwardly against the sides of the tablet and against theopposed projecting wrapper sides to form side tucks and upstandingloops, loop folding devices adapted to fold the upstanding loops againstthe side tucks to form secondary folds overlapiping said side tucks,side folding devices a apted to fold the oppositely projecting wrappersides and secondary folds around the tablet with the one wrapper sideand secondary fold overlapping the other wrapper sidevand secondarj;fold to form a single overlap mg oint in t e wrapper, said folding ofsai' wrap er sides and secondary folds also forming t e projecting wraper end into an open cylinder, and grippers fbr gripping said opencylinder and twisting said open cylinder in such a direction as toretain the wrapper sides in their overla ping relationship.

8. Apparatus for fol mg wrappers around tablets comprising folding meansfor enclosing one end of the tablet in a wrapper ing devices adapte tofold the projecting and forming oppositely projecting wrapper sides anda pro ecting wrapper end, side tuck-- said open cylinder and twistingsaid open,

cylinder in such a direction as to retain the vglrapper sides in theiroverlapping relations ip.

h Irawitness whereof I have hereunto set my FREDERICK GROVER.

